Ko te paru, he ranunga rerekē o ngā matūriki wai me ngā matūriki totoka, e kawe whānuitia ana i roto i ngā ahumahi pēnei i te keri maina, te keri hinu, te miihini matū, me te maimoatanga waipara. He mea nui te ine tika i te rere o te paru mō te whakahaere tukanga, te arotau utu, me te tiaki taputapu. He maha ngā wā ka raru ngā mita rere tuku iho ki te kaha o te paru, te matotoru teitei, me te nui o ngā matūriki totoka. Heoi, kua puta ake ngā mita rere ultrasonic Doppler hei huarahi pono, me te whakamahi i te pānga Doppler hei wikitoria i ēnei wero.
Ko te kaupapa matua o ngā mita rere ultrasonic Doppler e whakawhirinaki ana ki te nekehanga auau i puta mai i ngā matūriki neke i roto i te paru. Ina tukuna he tohu ultrasonic me te auau pumau ki roto i te paipa, ka marara atu i ngā matūriki totoka iri, i ngā mirumiru rānei i roto i te paru. Ka pāngia te tohu whakaata e te huringa auau—e mōhiotia ana ko te nekehanga Doppler—e pā ana ki te tohu i tukuna. Mā te tatau i tēnei rerekētanga auau mā te whakamahi i te tātai Δf=2f₀·v·cosθ/c (ko f₀ te auau tuku, ko v te tere paru, ko θ te koki i waenga i te hihi ultrasonic me te ahunga rere, ā, ko c te tere o te oro), ka tika te tango a te mita rere i te tere o te paru, ā, ka tatau anō i te tere rere mā te whakakotahi i te horahanga whakawhiti o te paipa.
Ko te ine kore-whakauru tētahi o ngā painga nui o ngā mita rere ultrasonic Doppler mō ngā tono paru. Kāore i rite ki ngā taputapu whakaeke e hiahia ana kia whakarerekētia te paipa, ka whakamahia e ēnei mita rere ngā pūoko whakapiri e mau ana ki waho i te pakitara paipa. Ka whakakorehia e tēnei hoahoa te pa atu tika ki te paru whakakoi, ka karohia te kakahu o te pūoko, te waikura, me ngā mōrearea turuturu o te paipa. He māmā noa te tāutanga me te kore e whakararuraru i te whakaputanga, he mea pai mō te whakahou i ngā pūnaha kawe paru o nāianei.
Mā ngā hangarau tukatuka tohu matatau ka whakarei ake i te pono o ngā mita rere ultrasonic Doppler i roto i ngā taiao paru matatini. Mā ngā auahatanga pēnei i te Refractive Spread Spectrum Analysis (RSSA) ka taea e te taputapu te hopu me te tātari i ngā tohu whakaata whānui-auau, ka whakanui ake i te kaha ultrasonic mai i ngā matūriki me te whakapai ake i te auautanga ine. Kei roto hoki i ēnei mita rere ngā kaha ārai-aukati hiko me te wā tātari me te urupare ka taea te whakarite, ka urutau ki ngā āhuatanga paru rerekē pēnei i te rahi matūriki (0.1-1000μm) me te kukū.
I roto i ngā mahi whaihua, he mahi nui tā ngā mita rere ultrasonic Doppler puta noa i ngā ahumahi maha. I roto i te keri, ka aroturukihia e rātou te kawe paru paru hei ārai i te aukati i ngā paipa i puta mai i te tere rere koretake. I roto i te keri hinu, ka ine tika i te rere o te paru keri hei whakapai ake i te pai o te keri me te whakarite i te pumau o te poka. Ka whakawhirinaki ngā tipu maimoatanga wai para ki a rātou hei aroturuki i te rere o te paru paru, hei tautoko i te whakahaere tukanga me te tutuki i ngā ture taiao. Ko ngā tauira pēnei i te raupapa Flow P-500 e tuku ana i ngā kōwhiringa tāutanga maha (pūmau, kawe, whakairihia ki te pakitara) me ngā atanga putanga raraunga (4-20mA, Modbus RTU RS485), e hono pai ana ki ngā pūnaha whakahaere ahumahi.
Ahakoa ōna painga, he mea nui ētahi whakaaro kia pai ai te mahi. Me nui te kukū o ngā matūriki iri, ngā mirumiru rānei i roto i te parai hei whakaputa i ngā tohu whakaata whai hua—mēnā he iti rawa ngā matūriki, ka hē pea te ine. Ka pā hoki te rauemi paipa, te matotoru o te pakitara, me te āhua o te mata ki te urunga o te tohu, me tika te tūnga me te whakatikatika o te pūoko. Ahakoa he iti noa te tiaki i ia wā, ki te whakatauritea ki ngā mita tuku iho, kei roto ko te horoi me te manatoko i te pūoko hei whakarite i te pumau mō te wā roa.
I te mea e hiahia ana ngā ahumahi ki ngā otinga ine rere tika ake, ā, he roa ake te whanaketanga, kei te whanake tonu ngā mita rere ultrasonic Doppler. Nā tō rātou kaha ki te whakahaere i ngā āhuatanga paru kino, me te hoahoa kore-whakaeke me te tukatuka tohu matatau, ka waiho hei whiringa pai mō ngā tukanga ahumahi hou. Mā te whakarato i ngā raraunga rere pono, wā-tūturu, ka whai wāhi ēnei taputapu ki te whakapai ake i te whai huatanga o te mahi, te whakaiti i ngā utu tiaki, me te whakanui ake i te haumaru i roto i ngā pūnaha kawe paru.
Wā tuku: Hanuere-16-2026